Main Engine and Auxiliary machinery repair

Ship’s main propulsion and Auxiliary machinery repair


AIS Marine & Offshore is the only co-operative workshop of Mitsui E&S Machinery Co, Ltd (previously known as Mitsui Engineering & Shipbuilding) in Oceania to Overhaul, Maintenance and Modification of Main Engines (Mitsui MAN B&W) manufactured by Mitsui E&S Machinery Co, Ltd under the license agreement with MAN Turbo & Diesel. We have four superintendent engineers located in Brisbane, Gladstone & Perth to provide fast response to the clients.

Our propulsion and auxiliary machinery repair team would take complete care of the propulsion system of your vessel. Our services ranging from propeller/drive shaft, CPP maintenance, updating controls, bow thruster overhaul, thrust inspection, modifying damaged blades and stabilizer seal repair. The propulsion engineers at AIS Marine and Offshore are experienced, highly skilled and having in-depth knowledge and understanding of propulsion systems.

Irrespective of where or what type of vessels you operate, We at AIS Marine and Offshore can provide the parts, repair, maintenance and modernization solutions to keep propulsion system operate smoothly and efficiently. We also offer propulsion controls and monitoring, underwater services and metallurgical repairs.



  • Collection of the units from the vessel
  • Ultrasonic cleaning of all components
  • Measuring and reporting of all normal related parts
  • Grinding of intake and exhaust valves and seats
  • Overhaul and repair of fuel equipment
  • Overhaul of all unit components (Cylinder head, liner, piston & connecting rod)
  • Transportation back to vessel
  • Supervision of engine reassembly and test run


AIS Marine and Offshore is specialized in the installation, maintenance and repair of propulsion systems (gearboxes, shafts and propellers lines), generators, and pumps and auxiliaries.


With a diverse fleet machine strong skill in general mechanics, hydraulics, boiler, plumbing and machining, AIS Marine and Offshore is able to take turnkey projects from their study to their achievement.

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